<template>
    <div class="login">
        <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">lacus</h3>
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" type="link" size="large" auto-complete="off" placeholder="账号">
                    <template #prefix>
                        <svg-icon icon-class="user" class="el-input__icon input-icon"/>
                    </template>
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input
                        v-model="loginForm.password"
                        type="password"
                        size="large"
                        auto-complete="off"
                        placeholder="密码"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix>
                        <svg-icon icon-class="password" class="el-input__icon input-icon"/>
                    </template>
                </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="isCaptchaOn">
                <el-input
                        v-model="loginForm.code"
                        size="large"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        @keyup.enter="handleLogin"
                >
                    <template #prefix>
                        <svg-icon icon-class="validCode" class="el-input__icon input-icon"/>
                    </template>
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img"/>
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</el-checkbox>
            <el-form-item style="width: 100%">
                <el-button :loading="loading" size="large" type="primary" style="width: 100%"
                           @click.prevent="handleLogin">
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <div style="float: right" v-if="register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                </div>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © 2018-2022 agileboot All Rights Reserved.</span>
        </div>
    </div>
</template>

<script setup>
import Cookies from 'js-cookie';
// import { getCodeImg } from '@/api/loginApi';
import * as loginApi from '@/api/loginApi';
import {decrypt, encrypt} from '@/utils/rsaUtil';

const store = useStore();
const router = useRouter();
const {proxy} = getCurrentInstance();

const loginForm = ref({
    username: 'admin',
    password: 'admin123',
    rememberMe: false,
    code: '',
    uuid: '',
});

const loginRules = {
    username: [{required: true, trigger: 'blur', message: '请输入您的账号'}],
    password: [{required: true, trigger: 'blur', message: '请输入您的密码'}],
    code: [{required: true, trigger: 'change', message: '请输入验证码'}],
};

const codeUrl = ref('');
const loading = ref(false);
// 验证码开关
const isCaptchaOn = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

function handleLogin() {
    proxy.$refs.loginRef.validate((valid) => {
        if (valid) {
            loading.value = true;
            // 勾选了需要记住密码设置在cookie中设置记住用户明和名命
            if (loginForm.value.rememberMe) {
                Cookies.set('username', loginForm.value.username, {expires: 30});
                Cookies.set('password', encrypt(loginForm.value.password), {expires: 30});
                Cookies.set('rememberMe', loginForm.value.rememberMe, {expires: 30});
            } else {
                // 否则移除
                Cookies.remove('username');
                Cookies.remove('password');
                Cookies.remove('rememberMe');
            }
            // 调用action的登录方法
            store
                .dispatch('Login', loginForm.value)
                .then(() => {
                    router.push({path: redirect.value || '/'});
                })
                .catch(() => {
                    loading.value = false;
                    // 重新获取验证码
                    if (isCaptchaOn.value) {
                        getCode();
                    }
                });
        }
    });
}

function getCode() {
    loginApi.getCodeImg().then((res) => {
        isCaptchaOn.value = res.isCaptchaOn === undefined ? true : res.isCaptchaOn;
        if (isCaptchaOn.value) {
            codeUrl.value = `data:image/gif;base64,${res.img}`;
            loginForm.value.uuid = res.uuid;
        }
    });
}

function getCookie() {
    const username = Cookies.get('username');
    const password = Cookies.get('password');
    const rememberMe = Cookies.get('rememberMe');
    loginForm.value = {
        username: username === undefined ? loginForm.value.username : username,
        password: password === undefined ? loginForm.value.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
    };
}

getCode();
getCookie();
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url('../assets/images/bg3.jpg');
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;

    input {
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
